Oracle Virtual Box Appliance import

I am running Ubuntu 16.04 LTS. I am trying to use Oracle VM to load a Kali Linux operating system and get an error that I see is quite common with a lot of other people online. The thing is that most people run Windows and the solutions end up irrelevant to my case. I will include a screenshot of the exact issue I am getting. I have tried to update, uninstall and install again. Still, the very same issue persists. Any assistance would be greatly appreciated since I do not know what else to do. Thank you in advance.